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Issue 9, 2005
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Using Wet-FGD systems for mercury removal

Mercedes Díaz-Somoano,*a  Sven Unterbergera  and  Klaus R. G. Heina 
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* Corresponding authors

a Institute of Process Engineering and Power Plant Technology, University of Stuttgart, Pfaffenwaldring 23, Stuttgart, Germany
E-mail: diaz@ivd.uni-stuttgart.de
Fax: +49 711 685 3491
Tel: +49 711 685 7761

Abstract

A plan to control mercury emissions to the atmosphere and to establish mercury emission limits has recently been elaborated by the European Commission, making it necessary to devise an efficient and cost effective mercury removal technology. Towards this end wet flue gas desulfurization units appear as a promising option for multi-pollutant control. However, more investigation on mercury removal and a greater mercury removal efficiency are required to achieve this objective. In the present work scrubber chemistry and the application of various solid additives to enhance mercury removal in wet scrubbers is evaluated. The results obtained show a significant correlation between mercury removal efficiency and the pH of the scrubber slurry and SO2 concentration. A weaker correlation was observed between oxygen or slurry concentration and removal efficiency. Finally several solid oxides were found to be effective additives for enhancing mercury capture in wet scrubbers.

Graphical abstract: Using Wet-FGD systems for mercury removal

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Publication details

The article was received on 31 May 2005, accepted on 22 Jul 2005 and first published on 05 Aug 2005


Article type: Paper
DOI: 10.1039/B507672B
Citation: J. Environ. Monit., 2005,7, 906-909
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    Using Wet-FGD systems for mercury removal

    M. Díaz-Somoano, S. Unterberger and K. R. G. Hein, J. Environ. Monit., 2005, 7, 906
    DOI: 10.1039/B507672B

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